Graph of the obliquity of the ecliptic of date on the equator of date for the past 5 million years. From Berger, A.L. (1976), Obliquity and Precession for the last 5000000 years, Astronomy and Astrophysics 51, 127-135.
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{{Information |Description=Graph of the obliquity of the ecliptic of date on the equator of date for the past 5 million years. From Berger, A.L. (1976), Obliquity and Precession for the last 5000000 years, Astronomy and Astrophysics 51, 127-135. |Date=...